Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!ccwf.cc.utexas.edu
From: android@ccwf.cc.utexas.edu (Andy Wilks)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Determining Video Subsystem Type ...
Message-ID: <50689@ut-emx.uucp>
Date: 17 Jun 91 21:58:07 GMT
References: <1991Jun14.133809.14503@eng3.sci.com>
Sender: news@ut-emx.uucp
Reply-To: android@ccwf.cc.utexas.edu (Andy Wilks)
Organization: The University of Texas at Austin
Lines: 39

In article <1991Jun14.133809.14503@eng3.sci.com> felton@eng3.sci.com (Ed Felton) writes:
)How can I, without using anything DOS'ish, (BIOS calls or memory reads only),
)determine the Video Subsystem that is in place?

Look at the little label on the back of the monitor...
 
>I have a code fragment from "USER INTERFACES IN C" [Mark Goodwin]
>that detects MDA, CGA, and EGA/VGA.

Any code you have has to generate a BIOS interupt to determine the video
display.  That is how you communicate with the hardware.  Of course, if
you insist on NOT using interupts you could query the ports yourself.
 
)I would like to go further, and be able to break the EGA/VGA down into 
)EGA or VGA, and also would like to be able to detect any others like
)SVGA.
 
>Any help in this is greatly appreciated.  
>Source code, Pseudocode, Smoke signals all accepted.
> Thanks in Advance
 
>Ed Felton
>-- 
>Ed Felton
>PC Diagnostics Guy                   _H_a_v_e_ _._s_i_g_,_ _w_i_l_l_ _t_r_a_v_e_l_.
>SCI Systems Inc.
>InterNet: _f_e_l_t_o_n_@_s_c_i_._c_o_m  The late MA Bell: W:_(_2_0_5_)_ _8_8_2_-_4_2_7_0   H:_(_2_0_5_)_ _7_2_5_-_4_8_7_9


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